These small, seemingly harmless habits can morph into bigger relationship issues if left unchecked.

It's the little things

It's the little things

It's not only cheating or addictions that can drive couples apart: Sometimes the most minuscule relationship moves can sabotage a marriage. "That's because small things can accumulate and create real distance between a couple," says Victoria Fleming, PhD, a marriage therapist with a private practice in Chicago and author of You Complete Me and Other Myths that Destroy Happily Ever After. "What seems like a little slight in the moment can snowball into a bigger issue if left unaddressed, and this is why flexibility and communicating with honesty and humor are so important for a successful marriage." Guard against these 10 love landslides in order to keep your marriage on solid ground.

Looking up your ex on Facebook

Looking up your ex on Facebook

"It's natural to be curious about past lovers, but following him on Facebook is a clue that you may be trying to fulfill a certain intimacy need that your husband is not fulfilling for you," says Dr. Fleming. "Plus, there is always the chance that you will get caught. I can't tell you the number of clients I've seen who are in therapy because they got discovered reconnecting online with old flames." It didn't work out with your ex for a reason, so rather than wasting time Facebooking him, spend that energy trying to make your marriage even better.